Visual c++ 下使用C语言开发的SOCKET网络通信程序，服务端，多线程，可以同时接受多个客户端的连接请求，最大连接数可修改。-Developed using C language Visual c++ the SOCKET network communication program, the server, multi-threaded, can also accept multiple client connection requests, and the maximum number of connections that can be modified.